{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:PUVUEJQ6B6B5HDSCGTSD3M6QMH","short_pith_number":"pith:PUVUEJQ6","canonical_record":{"source":{"id":"1512.04902","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-12-15T19:13:44Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"title_canon_sha256":"0da408d57a96931e66186a719878e54d0d4ddf7f01df36d4c769525ff87c4883","abstract_canon_sha256":"99e8fc7ae1b4d4bb4452ec24fed8eb609834f5a9a9fa8d47727d8400bcb6fa23"},"schema_version":"1.0"},"canonical_sha256":"7d2b42261e0f83d38e4234e43db3d061d0de035f5186cf78c242b2a913350897","source":{"kind":"arxiv","id":"1512.04902","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04902","created_at":"2026-05-18T01:09:06Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04902v2","created_at":"2026-05-18T01:09:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04902","created_at":"2026-05-18T01:09:06Z"},{"alias_kind":"pith_short_12","alias_value":"PUVUEJQ6B6B5","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PUVUEJQ6B6B5HDSC","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PUVUEJQ6","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:PUVUEJQ6B6B5HDSCGTSD3M6QMH","target":"record","payload":{"canonical_record":{"source":{"id":"1512.04902","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-12-15T19:13:44Z","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"title_canon_sha256":"0da408d57a96931e66186a719878e54d0d4ddf7f01df36d4c769525ff87c4883","abstract_canon_sha256":"99e8fc7ae1b4d4bb4452ec24fed8eb609834f5a9a9fa8d47727d8400bcb6fa23"},"schema_version":"1.0"},"canonical_sha256":"7d2b42261e0f83d38e4234e43db3d061d0de035f5186cf78c242b2a913350897","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:09:06.806516Z","signature_b64":"VD+I+rFCghe3AdcGNiHbaGB6q6eDlbRZsJ6qs5YgB1oy02oRYeS8L0iBdRuG/+06LKcFXHG8PakiSrYkaDp+AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7d2b42261e0f83d38e4234e43db3d061d0de035f5186cf78c242b2a913350897","last_reissued_at":"2026-05-18T01:09:06.806083Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:09:06.806083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.04902","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:09:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o7VSKAdj8A0tnzUPVy4wO8PxpHukSpLjJ/v8Ssh6kR+FcqbMK1zt3OBcM/zDUhxD9YLn2vgyagYr8H5OsxSQAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:13:57.708300Z"},"content_sha256":"f2b65f9843bbcee9db234b7c03a1f94bfd3b07d379f35d1f2a11065d5a2074a7","schema_version":"1.0","event_id":"sha256:f2b65f9843bbcee9db234b7c03a1f94bfd3b07d379f35d1f2a11065d5a2074a7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:PUVUEJQ6B6B5HDSCGTSD3M6QMH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Magnon Dirac materials","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mes-hall","cond-mat.other"],"primary_cat":"cond-mat.mtrl-sci","authors_text":"A. M. Black-Schaffer, A. V. Balatsky, J. Fransson","submitted_at":"2015-12-15T19:13:44Z","abstract_excerpt":"We demonstrate how a Dirac-like magnon spectrum is generated for localized magnetic moments forming a two-dimensional honeycomb lattice. The Dirac crossing point is proven to be robust against magnon-magnon interactions, as these only shift the spectrum. Local defects induce impurity resonances near the Dirac point, as well as magnon Friedel oscillations. The energy of the Dirac point is controlled by the exchange coupling, and thus a two-dimensional array of magnetic dots is an experimentally feasible realization of Dirac magnons with tunable dispersion."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04902","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:09:06Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"mdLPjzh4UlDo4wZqRRY+yHctmYcXJqBnbDtJ+aIGM/TqVVv6pujBBk3URxEg+m46TP0NaeIeBVJ7SKExNTWPDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T12:13:57.708670Z"},"content_sha256":"a1afebb3f8eecfcd2faf04ec099209594548c057ddc22b79883f7b0bac421f3e","schema_version":"1.0","event_id":"sha256:a1afebb3f8eecfcd2faf04ec099209594548c057ddc22b79883f7b0bac421f3e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH/bundle.json","state_url":"https://pith.science/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-04T12:13:57Z","links":{"resolver":"https://pith.science/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH","bundle":"https://pith.science/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH/bundle.json","state":"https://pith.science/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/PUVUEJQ6B6B5HDSCGTSD3M6QMH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:PUVUEJQ6B6B5HDSCGTSD3M6QMH","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"99e8fc7ae1b4d4bb4452ec24fed8eb609834f5a9a9fa8d47727d8400bcb6fa23","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-12-15T19:13:44Z","title_canon_sha256":"0da408d57a96931e66186a719878e54d0d4ddf7f01df36d4c769525ff87c4883"},"schema_version":"1.0","source":{"id":"1512.04902","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.04902","created_at":"2026-05-18T01:09:06Z"},{"alias_kind":"arxiv_version","alias_value":"1512.04902v2","created_at":"2026-05-18T01:09:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.04902","created_at":"2026-05-18T01:09:06Z"},{"alias_kind":"pith_short_12","alias_value":"PUVUEJQ6B6B5","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"PUVUEJQ6B6B5HDSC","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"PUVUEJQ6","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:a1afebb3f8eecfcd2faf04ec099209594548c057ddc22b79883f7b0bac421f3e","target":"graph","created_at":"2026-05-18T01:09:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We demonstrate how a Dirac-like magnon spectrum is generated for localized magnetic moments forming a two-dimensional honeycomb lattice. The Dirac crossing point is proven to be robust against magnon-magnon interactions, as these only shift the spectrum. Local defects induce impurity resonances near the Dirac point, as well as magnon Friedel oscillations. The energy of the Dirac point is controlled by the exchange coupling, and thus a two-dimensional array of magnetic dots is an experimentally feasible realization of Dirac magnons with tunable dispersion.","authors_text":"A. M. Black-Schaffer, A. V. Balatsky, J. Fransson","cross_cats":["cond-mat.mes-hall","cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-12-15T19:13:44Z","title":"Magnon Dirac materials"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.04902","kind":"arxiv","version":2},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:f2b65f9843bbcee9db234b7c03a1f94bfd3b07d379f35d1f2a11065d5a2074a7","target":"record","created_at":"2026-05-18T01:09:06Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"99e8fc7ae1b4d4bb4452ec24fed8eb609834f5a9a9fa8d47727d8400bcb6fa23","cross_cats_sorted":["cond-mat.mes-hall","cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-12-15T19:13:44Z","title_canon_sha256":"0da408d57a96931e66186a719878e54d0d4ddf7f01df36d4c769525ff87c4883"},"schema_version":"1.0","source":{"id":"1512.04902","kind":"arxiv","version":2}},"canonical_sha256":"7d2b42261e0f83d38e4234e43db3d061d0de035f5186cf78c242b2a913350897","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d2b42261e0f83d38e4234e43db3d061d0de035f5186cf78c242b2a913350897","first_computed_at":"2026-05-18T01:09:06.806083Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:09:06.806083Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VD+I+rFCghe3AdcGNiHbaGB6q6eDlbRZsJ6qs5YgB1oy02oRYeS8L0iBdRuG/+06LKcFXHG8PakiSrYkaDp+AA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:09:06.806516Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.04902","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f2b65f9843bbcee9db234b7c03a1f94bfd3b07d379f35d1f2a11065d5a2074a7","sha256:a1afebb3f8eecfcd2faf04ec099209594548c057ddc22b79883f7b0bac421f3e"],"state_sha256":"e3b8e9ac385f0fe6c35e7af8165c41a131961921da8a731ed29adad2f7d478ad"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GjrgxcpcqMJPataQu30HizseCuwBt/AEASnLOJ3G3p5DPNGbf5l+irHD2CnrWUsRezuXO+FCthc4ceOXR/avCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T12:13:57.710669Z","bundle_sha256":"77051087de6314bff764a738dd6788d1d3bf7104f186cad2f53abc7b2e2e1d79"}}